It now looks like Treyarch are yet to give up on GKNOVA6 and will continue to update it as a way of teasing upcoming download-able content.
The newest update shows an old-fashioned countdown followed by an image which seems to resemble Leonardo da Vinci's 'Vitruvian Man' drawing. It's likely that this update is teasing the first download-able content for Black Ops, 'First Strike'. Although the pack will include multiplayer maps, it's more than likely that this is teasing the new Zombie map titled 'Ascension'.
my source is from a website and yes i did copy and paste it